Question 1 :
A gas is being compressed adiabatically. The&#160;specific heat of the gas during compression is :<br/>

Question 3 :
The volume of $1 m^3$ of gas is doubled at atmospheric pressure. The work done at constant pressure will be

Question 4 :
In which of the following process the system and surrounding comes back to its original state after the process is complete?

Question 7 :
Which of the following statement is true as per the second law of thermodynamics for an isolated, ordered system?<br/>

Question 8 :
Which of the following is/are the reason of the irreversibility of process?

Question 9 :
Which of the following is the best container for gas during adiabatic process?

Question 10 :
A sample of gas expands from volume $V_1$ to $V_2$. The amount of work done by the gas is greatest when the expansion is

Question 12 :
A scientist that the efficiency of his heat engine which operates at source temperature $127^{\circ}C$ and sink temperature $27^{\circ}C$ is 26% then

Question 13 :
An automobile engine absorbs $1600 \ J$ of heat from a hot reservoir and expel $1000\ J$ to a cold reservoir in each cycle.Find the efficiency of the cycle ?

Question 15 :
Two moles of an ideal monoatomic gas at $27^oC$ occupies a volume of $V$. If the gas is expanded adiabatically to the volume $2V$, then the magnitude of work done by the gas will be $(\gamma =5/3)$:

Question 16 :
When 100 J of heat is given to an ideal gas it expands from 200 $cm^3$ to 400 $ cm^3$ at a constant pressure of $3 \times 10^5$ Pa. Then calculate the&#160;change in internal energy of the gas :$R=\left [ \dfrac{25}{3}J/mol-k \right ]$<br/>

Question 17 :
Two samples of gases 1 and 2 are initially kept in the same state. Sample 1 is expanded through an isothermal process whereas sample 2 through an adiabatic process up to the same final volume. Let $P_1$ and $P_2$ be the final pressure of the samples 1 and 2 respectively then

Question 18 :
Pure water is kept in an insulated&#160;flask. Some ice&#160;cooled to $-15^{o}C$&#160;is dropped into the flask.The fraction&#160;of water frozen into ice is:<br/>

Question 19 :
If three different liquid of different masses specific heats and temperature are mixed with each other then what is the temperature of the mixture at thermal equilibrium. If,<br/>$m_1,\,s_1,\,T_1\rightarrow$ specification for liquid<br/>$m_2,\,s_2,\,T_2\rightarrow$ specification for liquid<br/>$m_3,\,s_3,\,T_3\rightarrow$ specification for liquid

Question 20 :
Zeroth law of thermodynamics is not valid for which one of the following ?